Barb_ Posted September 20, 2012 Share Posted September 20, 2012 (edited) Believe it or not, fiber. http://www.ncbi.nlm.nih.gov/m/pubmed/12020388/ http://m.ajcn.nutrition.org/content/92/3/556.full Google fiber and menarche for more links. 25mg seems to halve the risk of early menarch (<12yo), which also reduces long term breast cancer risk. I always wondered why my mom, grandma and cousin started at 9-11 and neither I nor my daughters started until 13. Fiber isn't the only factor, but it turns out to be a significant one...more significant than body fat or heredity alone according to this book I'm reading: Breasts a Natural and Unnatural History Eta: sorry for any wonky links. I'm on my phone. Edited September 20, 2012 by Barb F. PA in AZ Quote Link to comment Share on other sites More sharing options...
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